/**
 * Copyright 2011 FeedDreamwork SIG
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

package org.feeddreamwork.processors;

import java.util.regex.Pattern;

import org.feeddreamwork.*;
import org.feeddreamwork.feed.*;

public class FeedFilterProcessor extends FeedEntryProcessor {
	private String source, regex;

	public FeedFilterProcessor(String source, String regex) {
		Utils.throwIfNullOrEmpty(regex);
		this.source = source;
		this.regex = regex;
	}

	@Override
	public boolean processEntry(FeedContext context, Entry entry) {
		String content = null;
		if (source.equals("author"))
			content = entry.getAuthor();
		if (source.equals("description"))
			content = entry.getContent();
		if (source.equals("link"))
			content = entry.getLink();
		if (source.equals("title"))
			content = entry.getTitle();
		if (source.equals("pubdate"))
			content = DateUtils.formatDateAsRFC2822(entry.getUpdatedTime());
		if (source == null)
			return true;
		if (Pattern.compile(regex).matcher(content).find())
			return false;
		return true;
	}

}
